Pen jacket



FIG. 1 is a front bottom right perspective view of a pen jacket according to my new design;

FIG. 2 is a rear-top-left perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof, wherein the left side elevational view is a mirror image of the right side elevational view;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and

FIG. 8 is a partial front-bottom-right perspective view thereof indicated in FIG. 1 .

The dot-dot-dash broken lines indicate the boundary of the enlarged portions of the drawings. The remaining broken lines in the figures depict portions of the pen jacket that form no part of the claimed design. 

CLAIM The ornamental design for a pen jacket as shown and described. 